弹簧的往复运动随着时间慢慢减弱。

The ___oscillations of the spring gradually decreased over time.

温度计的读数在一天内会有很大的波动。

The thermometer readings show large ___oscillations throughout the day.

工程师调整了电路以减少电流的波动。

The engineer adjusted the circuit to reduce the ___oscillations in the current.